package oclib

import (
	"encoding/json"
	"errors"
	"fmt"
	"strings"
	"time"

	"cloud.o-forge.io/core/oc-lib/models/peer"
	"cloud.o-forge.io/core/oc-lib/models/resources"
	"cloud.o-forge.io/core/oc-lib/models/resources/datacenter"
	"cloud.o-forge.io/core/oc-lib/models/resources/workflow/graph"
	"cloud.o-forge.io/core/oc-lib/models/utils"
	"cloud.o-forge.io/core/oc-lib/tools"
)

type AbstractWorkflow struct {
	resources.ResourceSet
	Graph          *graph.Graph      `bson:"graph,omitempty" json:"graph,omitempty"`
	ScheduleActive bool              `json:"schedule_active,omitempty" bson:"schedule_active,omitempty"`
	Schedule       *WorkflowSchedule `bson:"schedule,omitempty" json:"schedule,omitempty"`
	Shared         []string          `json:"shared,omitempty" bson:"shared,omitempty"`
}

func (w *AbstractWorkflow) isDCLink(link graph.GraphLink) (bool, string) {
	if d, ok := w.Graph.Items[link.Source.ID]; ok && d.Datacenter != nil {
		return true, d.Datacenter.UUID
	}
	if d, ok := w.Graph.Items[link.Destination.ID]; ok && d.Datacenter != nil {
		return true, d.Datacenter.UUID
	}
	return false, ""
}

type Workflow struct {
	utils.AbstractObject
	AbstractWorkflow
}

func (wfa *Workflow) CheckBooking(subPath string, caller *tools.HTTPCaller) (bool, error) {
	// check if
	if wfa.Schedule == nil || wfa.Schedule.Start == nil || wfa.Graph == nil {
		return false, nil
	}
	if wfa.Schedule.End == nil {
		// if no end... then Book like a savage
		return true, nil
	}
	e := *wfa.Schedule.End
	accessor := (&datacenter.DatacenterResource{}).GetAccessor(nil)
	for _, link := range wfa.Graph.Links {
		if ok, dc_id := wfa.isDCLink(link); ok {
			dc, code, _ := accessor.LoadOne(dc_id)
			if code != 200 {
				continue
			}
			// CHECK BOOKING
			peerID := dc.(*datacenter.DatacenterResource).PeerID
			if peerID == "" {
				return false, errors.New("no peer id")
			}
			p, code, err := (&peer.Peer{}).GetAccessor(nil).LoadOne(peerID)
			if code != 200 {
				return false, err
			}
			subPath = strings.ReplaceAll(subPath, ":datacenter_id", fmt.Sprintf("%v", dc_id))
			subPath = strings.ReplaceAll(subPath, ":start_date", wfa.getFormat(wfa.Schedule.Start))
			subPath = strings.ReplaceAll(subPath, ":end_date", wfa.getFormat(&e))
			_, err = p.(*peer.Peer).LaunchPeerExecution(peerID, "", p.(*peer.Peer).Url+subPath, utils.BOOKING, tools.GET, nil, caller)
			if err != nil {
				return false, err
			}
		}
	}
	return true, nil
}

func (wfa *Workflow) getFormat(date *time.Time) string {
	month := fmt.Sprintf("%v", int(date.Month()))
	day := fmt.Sprintf("%v", date.Day())
	hour := fmt.Sprintf("%v", date.Hour())
	minute := fmt.Sprintf("%v", date.Minute())
	second := fmt.Sprintf("%v", date.Second())
	if len(month) == 1 {
		month = "0" + month
	}
	if len(day) == 1 {
		day = "0" + day
	}
	if len(hour) == 1 {
		hour = "0" + hour
	}
	if len(minute) == 1 {
		minute = "0" + minute
	}
	if len(second) == 1 {
		second = "0" + second
	}
	return fmt.Sprintf("%v", date.Year()) + "-" + month + "-" + day + "T" + hour + ":" + minute + ":" + second
}

func (d *Workflow) GetName() string {
	return d.Name
}

func (d *Workflow) GetAccessor(caller *tools.HTTPCaller) utils.Accessor {
	data := New()
	data.Init(utils.WORKFLOW, caller)
	return data
}

func (dma *Workflow) Deserialize(j map[string]interface{}) utils.DBObject {
	b, err := json.Marshal(j)
	if err != nil {
		return nil
	}
	json.Unmarshal(b, dma)
	return dma
}

func (dma *Workflow) Serialize() map[string]interface{} {
	var m map[string]interface{}
	b, err := json.Marshal(dma)
	if err != nil {
		return nil
	}
	json.Unmarshal(b, &m)
	return m
}